A-LevelPhysicsDynamics9702/12 · Oct/Nov 2016 · Q131 Mark
A light ball is falling vertically through air. The variation with time t of the resistive force Fᵣ acting on the ball is shown. [Figure 13.1] At which times are the speed of the ball zero, the speed at a maximum and the acceleration zero?
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Azero speed: t₁, maximum speed: t₂, zero acceleration: t₁
Bzero speed: t₁, maximum speed: t₂, zero acceleration: t₂
Czero speed: t₂, maximum speed: t₁, zero acceleration: t₁
Dzero speed: t₂, maximum speed: t₁, zero acceleration: t₂
✓ Correct answer
B: zero speed: t₁, maximum speed: t₂, zero acceleration: t₂
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